Trouble Shooting
The confirmation dialog "This editing operation cannot be undone" is displayed when you try to enter an address in the "Enter Address" page
It may be because...
The address of the currently displayed Webpage in the browsing screen is long.
What to do
You don't need to do anything special. This is the specification of PalmOS. This dialog is displayed when you enter a new character while a long string is selected. Leave it and tap [OK] to enter an address.